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Tuning Sugar-Based Chiral and Flower-Like Microparticles
Yawen Yao1, Qiyun Tang2, Sabine Rosenfeldt3
1Sustainable Materials and Chemistry, Department of Wood Technology and Wood-Based Composites, Georg-August-University of Göttingen, Büsgenweg 4, 37077, Göttingen, Germany.
Small (Weinheim an Der Bergstrasse, Germany)
|August 19, 2021
Summary
Researchers created chiral, flower-like microparticles from monosaccharide esters. Different monosaccharides yielded unique structures, offering a new method for designing advanced supermolecular materials.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Carbohydrate Chemistry
Background:
- Supermolecular structures like chiral and flower-like microparticles are crucial for various applications.
- Developing methods to precisely control these morphologies, especially from renewable resources like monosaccharides, is challenging.
- Existing research on monosaccharide-derived superstructures is limited, lacking a general understanding of structure-morphology relationships.
Purpose of the Study:
- To investigate the formation of unique supermolecular structures from monosaccharide esters without external stimuli.
- To explore the influence of different monosaccharide backbones on the resulting microparticle morphologies.
- To establish a general method for designing and controlling superstructures based on monosaccharide configurations.
Main Methods:
- Synthesis of various monosaccharide esters, including d- and l-glucose stearoyl esters, galactose, mannose, and xylose esters.
- Characterization of the resulting microparticles' morphologies using advanced imaging techniques.
- Analysis of structure-morphology relationships based on the distinct molecular configurations of the monosaccharides.
Main Results:
- Chiral, flower-like, or solid microparticles were successfully tuned using only monosaccharide esters.
- d- and l-glucose stearoyl esters induced specific chiral 'left-handed' and 'right-handed' morphologies.
- Other monosaccharides (galactose, mannose, xylose) formed diverse non-chiral morphologies, with glucose and xylose yielding solid particles, while mannose and galactose produced porous flower-like particles.
- The number of side chains and bond orientations influenced the formation of solid versus porous flower-like structures.
Conclusions:
- Monosaccharide esters provide a versatile platform for creating tunable supermolecular microparticles.
- The molecular configuration of the monosaccharide backbone is a key determinant of the resulting microparticle chirality and morphology.
- These findings present a general strategy for designing and controlling complex superstructures from readily available carbohydrate building blocks.
